Year	% change from 1990
1991	-11.0128648456296
1992	-16.6121283854348
1993	-2.70447987498743
1994	9.42081118924396
1995	13.0435455297949
1996	16.1796900987878
1997	18.8331128594305
1998	18.0355388459545
1999	17.7787060889477
2000	18.873339676793
2001	21.4610070629008
2002	22.527791315649
2003	23.8057663595504
2004	23.022117013623
2005	21.5646684768734
2006	20.910209102091
2007	20.0909744946506
2008	19.9656524867135
2009	18.534506099778
2010	20.4483742950637
2011	21.6528580380143
2012	22.857341780965